And the changes between beta1 and this beta2:* Fix for some cases where Normals were incorrectly calculated and showing black NaN areas.

* IMPORTANT: This beta2 includes an EXPERIMENTAL change to calculate automatically Shadow Bias and Minimum Ray Dist depending on the scene size. This is to avoid black artifacts when resizing the objects. However as it's a fundamental change that affects everything, perhaps some new artifacts could appear in the images now and further fine tuning needed in this new formula. Please give us feedback about it in the forum:http://www.yafaray.org/community/forum/viewtopic.php?f=23&t=5084

* Small correction in the new Clay Render system. In the previous beta1 the original diffuse reflection for each material was incorrectly preserved. Now it will force it to 1.0 during Clay Render.